Goldilocks SRD

The Goldilocks Dice System is a TTRPG engine designed with the idea of a "happy medium" success criterion. Too much can be just as bad as not enough, but in different ways, so this system asks players to roll for the middle values on their dice, rather than looking for the highest or lowest value possible. Indeed, both those values represent disaster!

This system inherently makes failure far more interesting, because the roll automatically inspires different ways, and consequences, of failing depending on whether your roll is too high (overdoing it) or too low (not doing enough).

This is also the engine behind Dinosaur Sleuths In Rural England.